Ribbon mechanism for type-writing machines.



Patented Dec G. LATTA.

APPLICATION FILED SEPT. 6, 1907.

RIBBON MBGIIANISM PoR TYPE WRITING MACHINES E. G. LATTA.

RIBBON MEGHANISM FOR TYPE WRITING MACHINES.

APPLICATION FILED SEPT.6, 1907'.

'Patented fnac. 28, 1909.

3 SHEETS-SHEET 2.

E. G. LATTA. RIBBON MEGHANISM IORTY'IE WRITING MACHINES.

APPLICATION FILED SEPT. 6, 1907. y l

' 'Patented Dec. 28, 1909.

a SHEETS-sum1* s.

lfrzessdes:

6a. UMC,

UNTEB STATES fifiTENT GFFICE.

ni/iivirr G. LATTA; or sYnAcUsri, NEW YORK, ssIGNoR or JNE-HALF rro HARVEY A'. ivioYE'R, or sYRAcUsE, NEW YORK.

RIBBON MECHANISM ron 'rYrE-wnrfrme.` MACHINES.

Specification of Letters 'Patent Patented Dec, 28 1909 Application led lSeptember 6, 1907. Serial Noi 391,551:

To all whom it may concern:

Be it known that I, EMMIT Gr. LATTA, a citizenA of the United States, residing at Syracuse, iii the county of Onondaga and State of New York, have invented a new and useful Improvement in Ribbon Mechanisms l for TVpe-lVritiiig Machines, of which the followingis a specification.

4This invention relates to ribbon mechanisms forvisible writing typewriting machines in which the ribbon is vibrated to place it in printing position between the typ'e and the platen as the forinei approach the latter to make the impressions, and t0 .withdraw it yto expose the writing when thev typ recede from the platen. Y 4

The invention is more especially directed to improvements. in machines which are equipped with two narrow ribbons' of diei A2o ent colors or, characteristics, or a single wideY ribbon, and-with fnieans for vibrating either I i. of said ,narrow ribbons, or either of two different :portions of the f wide Pribbonj to and l. from., 'the printing kposition, as desired.

i n2 51 While the "improvements yare 'particularly adapted for use in fronti-strike machines 'if and are'illustrated in Lthe drawings as applied .to such a machine, some features thereof are 'equally applicable to *other forms of 3io typewriters and other machines employing ink ribbons.

I The principal objects of the ii'vention'are to produce a machine in which, either tivo VAnarrow ribbons, or a single wide ribbon can V'35 ,bei used as desired without necessitating` the pi ovision -of eXtra ordetachable parts; also to provide desirable means of simple cn-V struction for instantly and positively placiiigeither one of. the narrow ribbons, or

40 either pavrt,of,thewide ribboniii use; also to provide an automatic indicator that denotes which ribbon or part of the ribbon is `in use; alsovtoadapt the same ribbon spools and guides for carrying a single wide ribbon or two narrow ribbons arrangedA edg'e to edgeland .having means for separating the ribbons andpijeventing' interference between .them when .two are used; and'also to iinprovethe ribbon mechanisms for typewrit- 50 ing and analogous machines in the respects hereinafter described and set forth inthe claims. d... A h

Inthe accompanying drawings, consisting of three sheets Figure l is a. fragmentary central longitudinal sectional elevation of the upper portion of a front-strike typewritiiig machine provided with ribbon mechanism embodying the invention. Fig. 2 is a.

front elevation, partly in section, thereof, showing the saine at the .leftliand of the gure equipped with two narroiviibbons, and at the.riglit hand side thereof with a single wide ribbon. F 3 is a iear eleva- .tion of theV partiallyy completed vibrating' ribbon'guide orvibratonl is a broken plan View, partly in section, of 'the ribbon mechanism. Y`Fig.,5 is a sectionalview of one ing lever or plate and the associated parts.

Fig., lOis a transverse sectionalelevation of' the ribbon mechanism in line 10-410, Fig. 4. Fig. 1l is a sectional plan, on an enlarged scale, in line 11-11, Fig. 10.

Like letters of reference refer to like parts in the several figures.

Vofthe ribbon spools detached: Fig. 6' is an A represents a portion ofthe main frame of the machine, B the platen, C the platen carriage, and l) the shift franiepon which the carriage is supported and travels transverselyof the machine. The machine is of that sort i'n which the. typebars are pro- I vided with upper and lower case type, and the" shift frame D is suitably pivote( at the upper rear portion ofthe main frame to swing up and down about an `axis indicated at Fig. l, to place the platen iii printing relation with one o1.the other set of type.

vThe shift frame is operated by suitable means not shown. The shift frame shown or any other suitable means may be employed for shifting the platen.

E E represent ribbon spools arranged at opposite sidesof the front upper portion of vthe machine on .vertical axes, and `F represents a vibrating ribbon guide orvibrator arranged centrally in front'of-the platen, by which the ribbonl'or ribbons is or are held in '4 proper relationtaiid 'vibiated to and from the printing position. When two 'narrow -arator disks are moved to the middle of the spools between the two ribbons and thus separate and holdthe ribbons out of'contact with eachother, as shown at the left-hand side of Fig. 2.,

The vibrating ribbon guide or vibrator F shown is made from a single piece of sheet platen and is suitablv mounted to .vibrate up metal bent into shape. Fig. 3 shows the vibrator partially completed, the left-hand side showing the shape of the blank before ending, and the right-hand side showing the completed form. lI`he vibrator blank is slotted centrally at its upper portion for-the passage of the type in making the impressions, and is provided with lateral wings each having atits top and bottom small extensions f, and centrally between these a T-shaped lateral projection f. The central projections f are bent to the rear and the upper and lower extensions f are bent respectively downwardly and upwardly to the rear, as shown at the right-hand side of the guide in Fig. 3, thus providing two ribbonguide openings, one above the other, at each side ofthe-vibrator with central slots for the insertion and removal of the ribbons. The vibrator as thus formed is adapted to hold two narrow ribbons edge to edge, or one above the other in the dame lane. In addition to lthe guide openings tlhus formed, the wings of the vibrator are provided with two upright guide openings f2 extending nearly the full height of'; the wings. These openings or slots are adapted to properly guide a single wide ribbon threaded therethrough, as indicated at the right-hand side of Fig. 2. It .will be understood that when the wide ribbon is to be used the narrow ribbons are left off, and when the narrow ribbons are' to be used, the wide ribbon is not used. The vibrator could be of different construction and yet provided with guides foi' holding the ribbons in the same relation.

The vibrator normally stands below' the printing-point` at the front side of the the ribbon to and from In the machine illusvertically in suit-- and down to carry the printing position. trate-d, the vibrator slides -Y able ways on the rear side of an upright i si'otted slmport g which is attached to a front cent1-al extension g of the shift frame by shifting its l), see Fig. l. The invention does not, how'- ever, relate to the manner of mounting the vibrator and it could be differently mounted.

G represents an operating lever for the vibrator. This vibrator lever is suitably connected at its front end to the vibrator, and is fulcrumed on the shift frame extension g. A link gf' 's pivoted to the rear end of the vibrator lever, inclining upwardly and rearwardly therefrom, and is pivoted at its upper end to an arm or lever g* which'is fixed to and projects upwardly and forwardly from ,a rocking universal bar H which extends horizontally of the machine in'rear of the vibrator lever and is journaled the main frame.'

brator throughthe described connections to l vibrate the ribbon to and from the printing position.

The vibrator and vibrator lever, bein mounted on the shift frame, move up an down with the same in shifting the platen, and the vibrator lever Gr, link g3 and lever g* are so arranged as toproduce substantially like movements of the'vibrator in both positions of the shift frame. The vibrator lever and vibrator always move from the same normal position below the printing point, and a shorter movement of the vibrator lever is required to vibrate the upper narrow ribbon, or the upper portion o the wide ribbon, than is necessary to vibrate the lower ribbon or lower portion ofthe wide ribbon. These different movements of the vibrator are cdected without changing the normal position thereof, or of the lever,

operating link The vibrator lever has a fulcrum arm extending into a vertical slot in a lug z' on the rear side of the shift frame extension, and is provided with two pivot holes which register withholes passing through said fulcrum lug 'i'. A fulcrum yoke or support I, Fig. 10, which rests on and is adapted to slide laterally of the machine on the fulcrum lug, has legs depending at opposite sides of the lug, and pivots i i2 extend laterally 'toward each other from vthese legs into 'the izo ` rcprcsci'its a shifting lever or plate which crum. Thus by shifting the yoke the vibrator leven without being itself moved from the normal position, has its fulcrum point shifted farther from or nearer to its connectionwith its operating link, and the throw of the lever, and the vibrator connected thereto, .is shortened or lcngthened accordingly. In. the normal ope 'ationl of the machine, when the upper narrow ribbon or upper portion of the wide ribbon is used, the vibrator lever swings on the pivot z", and when` it 'is desired to use the lower narrow ribbon or lower portionV of the wide l ribbon, the yoke I is shifted and the vibrator lever swings" on the other pivot 2. As shown, the lyoke is attached lto a horizontal shifting rod K which slides in holes in bearing lugs wongthe' underside of the shift frame.

The means above described for vibratingI the ribbon and changing the throw of the vibrator for changing from one to the other of the narrow ribbons or parts of the wide ribbon, are not claimed herein as they form the subject of an application filed by scar C. Kavle, July 1, 1907, Serial'No. 381,762.

AThe single wide ribbon can' have upper and lower elds of differentcolors or kinds of ink, or it can have the saine ink throughout its width. ln using the latterkind of ribbon with the changeable throw vibrator, its upper portion can be used until exhausted and its lower portion then used, with considerable economy in the ycost of ribbons, as

-the wide ribbon costs but a trifle more than a narrower one. Two narrow ribbons with different inks are referableftofa single wi le ribbon having di erent inks on two fields, because if one ribbon "is exhausted before the other it. can be replaced-without the lossV of the other` ribbon, whereas the two fieldv ribbon is useless when one field only is e.\:'

hausted. With the vibrator described, however, the operator who does not Careto use twoseparate ribbons can use one wide one.'

The vibrator can be used whether the two ribbons are arranged on a lsingle palr of spools, as described, or otherwise..

The fulcranryoke I forY tlievibrator lever is shifted by mechanism preferably constructed as follows:"l'g,"Figs. 4,' 7, .94.11,

is pivotedv'atits rear end theunderszle of ,the top plate ofV the ,1nac`hine, by ay ser@ or the, like l, andl is provided at kits .front cndwith an upright portion,the upper end of whichis connecteda link or links Z to the shifting rod KQ, 'lhelink l" is pivoted to ,the lever ,lj at a` pointabove the line of the shift rod K softhatwhen the shift frame is raised the rod K is moved as far above said pivot as it is normally below it,` and consequently the movements of the fulcrum yoke are the saine in both positions of the shift frame. A horizontal shaft. M extending fore and aftof thel machine at 'one sidethereof and journaled in saleable bearings m projecting from the adjacentsidc of the machine, is provided at its rear end with a crank or eccentric pin m, Fig.' 11, which extends into a ver tical slot in the upright portion of the shifting lever' or plate. The pin normally occupies a dead center positionat one side o'f thc axis of the shaft in thc horizontal plane thereof 'and holds the plate fron'rniove nient in one position. By turning the shifting `shaft M one-half of ay revolution, the shifting lever or plate will be swung laterally and the shifting rod and yoke moved to change the fulcrum pivots of the vibrator lever, and the shifting lever or plate will be locked in the shifted position by the crankV lutions in the same direction, the fulcrum yoke is alternately shiftedin opposite directions to change the narro\v ribbons or the parts of the wide ribbon regardless of which. ribbon or portion in use. f

The shaftds preferably provided at its fi'ont-'feinl-"\v=ith an indicator or handle N havingbeveled upper and lower faces upon which appear the words Upper "i and 'Lowe1-for other indicia to 'designate which of= the-narrow ribbons or vportions of the wide-ribbon is in use. also be used to turn the shaft for clninging the'ribbons, and for less expensivemachines no other means need be provided forjturning the shaft. Preferalny, how-ever, the following operating means for r.the shaft are eniploycdt A. ribbon changing key or lever O is provided in a convenient position, pref era'bly at the upper side portion of the keyboard of the machine. An upright rack bar p pivotedl at its lower end to the key lever extends upwardly therefrom at one side of the shifting shaft M, and is provided with teeth ptocoperate with a ratchet pinion'j)2 secured to the shifting shaft. The teeth of the rack bar and pinion -have beveled and abrupt faces sogthat the rack bar will turn the pinion when moved downwardly and can ride over the teeth of thefpinion without y turning it when movedupwardly. Q, Figs. v

4L and 7 re aresents adetenthor doo which is i, l 3. .pivoted to a' lug onv the side of the main franie or othersuitable part. of the machine,

and is provided at its free end with a'tooth Q adapted to engagev in either of two diametrically opposite notches g in a stop wheel or disk g2 fixed to the shifting shaftuM, -to holdl said shaft with the eccentric pin in one or the other of its two dead center positions.

Thi s indicator can ioo ilo

' The, guides and ribbon separators could be `ribbon in the manner the ribbon changing key or lever O is de- -two narrow ribbons edge to edge in the saine tend into theguide slots between the two tors r are swungoutwarl'y tdwithdraw their A lateral extension g3 at the upper end of the rack bar p is adapted to strike said detent to stop the rack bar when it has been lowered far enough to half revolution and to press the detent against the stop to positively from over movement. Any other suitable i stop could, however, be used. Ihe -detent i or dog is also provided with a laterally7 projecting arm or part q* which fis connected by a spring Q5 to the rack bar p. This spring acts to lift or return the rack bar and the ribbon changing key and also to holdVV the rack bar in yielding engagement with the ratchetpiiiion and the detent-in one of the notches of the stop wheel when the rack bar is raised t-o prevent the accidental turning of the shaft M. This ratchet mechanism acts to turn the shifting shaft M one-half revolution and effectth'e changing of the described, each time pressed, so that like movements of the saine part always effect a change no matter which narrow ribbon or part of the wide ribbon is in use. Similarly like movements of the shaft M, when the ratchet-operating mechanism is omitted, always produce the desired change of the ribbons. R It, -Figs. 1, 2, 4 'and 6, representstationary ribbon guides adjacent to the spools.

The guides shown consist of L-shaped pieces having horizontal parts secured-to the bottoms of the spool seats, and upright portions provided with vertical ribbon guide slots joined centrally at one side by open-A ings through which the ribbons can be in-Y turii the shaft M one hold t-he shaft 'a single ribbon,

for two separate ribbons-of less width than serted and removed sidewise. The guide slots are long enough for the passage of the plane. 'r represents ribbon separators havends of the' guides R, and upright portions at the'sides of the guides provided with lateral extensions fr', Fig. 4, adapted to exribboiis through the inserting openings to prevent the ribbons from overlapping and interfering in the guide slots. IVhen the single wide ribbonis to be used, the separaextensions r from the guide slots, as shown atthe right-hand sideof Fig.- 4, or asshown in Fig. 6, where the extension of the separato-r closes the inserting .opening of the, guide.

of other construction.

rlhe described arrangement of the vibrating and stationary guides and spools permitseither two narrow ribbons or one wide ribbonto be used on the same machine without the use of any extra or detachable parts ating said vibrato-r to that can`be lost ormislaid, and it' enables .either one or two ribbons as required, and

the purchasei' to change from the use of a single ribbon to the two ribbons, orl vice versa, quickly and without expense.

'I claini as my invention :v

l. In a typewritin machine, a ribbon guide or vibrator having guiding parts fbr holding two separate ribbons edge to edge, and guiding parts for a single ribbon of greater width than one of said two separate ribbons, whereby either two narrow ribbons or one wide ribbon inlay be used with the saine guide or vibrator, substantially as set. forth. V

2. In a typewriting machine, a ribbon .guide or vibrator having guiding parts for three ribbons arranged for guidingtwo ribbons edge to edge or a single ribbon wit-hout change inthe guide or vibrator, substantially as set forth.

3. In aftypewgritingiguide or vibrator having guiding parts'arranged for holding two separate ribbons in substantially the same plane, and guiding parts for holding a singleA ribbon in a different plane from the two ribbons, substantially as set forth. Ael. In a typewriting machine, a ribbon guide or vibrator having guidinglparts for.

and having guiding parts that of the single ribbon, said guiding parts for the two ribbons overlapping the guiding parts for the single ribbon, setforth.

5. 'In a typewriting machine, tht-,combination of 'a ribbon vibratorhaving guides for holding two separate narrow ribbons edge substantially as to edge, and a guide for holding a singleA wide ribbon in a corresponding relation 'to the printing position, and means for opernarrow ribbons or either Ofdilferent portions of said wide ribbon to. and from the printing position withoutZ change in the normal position of the vibrator, substantially as set forth.

6. In a typewritin machine, the combination of a ribbon gui e, a lever for vibrating said guide, and means for changing the fulcrum point of said lever comprising a movable fulcrhni-changing part, and a rotatable shaft operatively connected to said fulcruinchanging part and acting by successive rotary movements of the shaft in the saine direction to move said part tov change the fi'ilcruirnv substantially as set forth .7 In a typewritin machine, the combination of a ribbon gui e, a lever for vibrating the guide, a movable part for chang-ing the throw of said lever, and a rotatable .shaft extending. fore and aft ofthe machine to the i vibrate either of' said.

iio

changing the throw of said lever, a rotatable` iso.

is turned to change the thrdw of said lever.'

substantially asv set forth,

8. In a typewriting machine, the combination of a. ribbon guide, a lever for vibrating thc guide, a laterally movable part for shaft extending fore and aft of themachine to,tlie front part thereof and operatively connected to said latcrally-movablc partand acting ea'ch time the shaftI is turned a half revolution in the same direction to shift and lock said laterally-movable part to change the throw of said lever, and means for holding the shaftin either of two positions, substantially as set forth.

9. In a typewriting machine, the combination of a ribbon guide, a lever for vibrating the guide, a movable part for changing the throw of said lever, a key at the keyboard of the machine, and connections between said key and said movable part whereby successive depressions of the key act to Shift said movable part alternately in opposite directions to change the throw of said lever,

'substantially as set forth.

lO. In a typewriting machine, the combination of a vibrating ribbon guide, a movable part'for changing the throw of saidA guide, and a manually movable part connected to said first mentioned movable part and acting with -successive movements in they same direction to shift said first mentioned movable part'alternately in opposite directions to change the throw of said guide, substantially as set forth. n

11. In a typewriting ma'chine, the combination of a ribbon vibrator, a rotatable ec.

centric, means operated by successivehalfrevolutions of said eccentric for changing the throw of said vibrator, and means acting by successive movements in the same direction to turn said eccentric successive half revolutions, substantiallyl as set forth.

I2. In a typewriting machine,` the combi- `nation of a vibrating ribbon guide, a laterally movable partfor changing the throw,

of said guide, a normally stationary rotatable shaft arrangedI at right angles to the direction of movement of said laterally movable part, and connections between .said shaft andl said laterally movable part whereby the turning movement of the shaft acts to change the throw of said guide, substantially as set forth.'

1.3. In atypewriting machine, the combination of a main frame, a platen shift frame supported thereby,.a vibrating ribbon guide supported by the shift frame, a part movably supported by the shift frame for changing the 'throw of said ribbon guide, an operating part supported by the main frame, and

said holding flexible connections between said operating parti and said movable part on. the shift frame whereby the movement of Said oper- K shaft changes the throw of said lever,'sub"i stantially as set forth. n

l5. In a typewriting machine, 'the combination of a ribbon` guide, a lever for vibrating the same, a shiftable part for changing the throw of said lever, a` rotary sliaft having an eccentric movable from one dead center position to another to shift and lock said part, and means for releasably holding said eccentric in its dead center positions, substantially as set forth.

16. In a. typewriting machine, thecombination of a ribbon guide, a lever for vibrati ing the guide, a part for changing the throw oflsaid lever, a movable device connected to said part, an eccentric engaging said movable device, and means for holding said eccentric in either of two positions for holdving said. movable device, and means for turning said eccentric from one to the other of positions, substantially as set forth.

'17. In a typewriting machine, the kcombination of a ribbon guide, a lever for vibrating the guide, a movable device' having a slot, a rotatable shaft having an eccentric4 seated in the slot, means operated by said device for changing thethrew of said lever7 means for holding said shaft in either of two positions, and a rack and pinion acting with each working movenient of said rack to turn said shaft from one to the other of saidl positions, substantially asset forth.

1S. In a typewritingmachine the combination ofa vil'irating ribbon guide, a. rotatable device, means operated b v said device *for changing the throw of said guide, a de-' tent for rieleasably holding the rotatable device in either of two positions, a rack and pinion acting with cach working movement of the rack to turn said device from one to the oth Tr of the dctcnt holding positions and to positively lock said detent at the limitof l movement of said rotatable'device, substantially as set forth. l

19. In a typewriting machine, the combi- `tion of a vibrating ribbongaide, a rotatable device, meins operated by said device for changing the throw of said ribbon guide,

a detent forkholding said rotatable device in either of two positions, a rack and pinion acting with each working movement of the rack to turn said device from one to the other of the detent holding positions, and a spring acting to return the rack to its normal position and hold said deteiit in holding position, substantially as set' forth.' c

20. In a typewriting inachine,.the combination of a ribbon vibrator, a Arotatable shaft, means operated by successive halt1 revolutions of said shaft tor changing the throw of said vibrator, and means acting by -snccessivcmovements in the same direction to turn said shaft successive half revolutions, substantially as set forth.

21. In a typewriting machine, the combination of a.vibrating ribbon guide, a. reciprocatory part, means operated by said part for changing the throw of said ribbon guide, a rotary shaft for reciprocating said part, means for holding said shaft in either of two positions, and a finger key acting with its working movement to turn said shaft 'from one to the other of its two positions, substantially as set forth.

22. Ink a typewriting machine, the combination of a ribbon vibrator, a rotatable shaft and connections for producing difi'erent movements of said vibrator, said shaft having an operating handle at the front ot' the machine bearing indicia for designating the different motions of the vibrator, the proper indication being brought to view by turning said shaft for changing the movement of said vibrator, substantially as set forth.

23. In a typewriting machine, the combination of a guide having` a slot for a ribbon or ribbons, and a movable separator which is adjustable to divide said slot hito tivo parts, substantially as set forth.

24. In' a typewriting machine, the combination of a ribbon guide having a guide slot 'and a connecting opening in one side to admit the ribbon laterally, and a movable separator adjustable to close said opening and divide said slot into two parts.' substantially as set forth.4

Q5. In a typewriting machine, a ribbon spool having end plates connected by a hub, and a movable separator disk arrangedron the hub between' the end plates. substantially as set forth.'

26. In ay typewriting machine, a. ri'blion spool having end plates connected by a hub, and a disk of substantially the same diameter as the end plates ,niounted on'thehub vbetween the end plates and adjustable thereon, sul'istaiitially as set Vforth.

QT. In a typewriting n'iachine and in a ribbon mechanism, moans for changing from one inking fieldto another, said means coinl 52S. In a typewriter i prising a single ribbon-changing key and means tor retaining` said key when at rest in the saine position regardless of which. inking field is in service.

machine and in a ribbon mechanism, means for changing from one inking field to another, said means coinprisinga single ribbon-changing key and means t'or returning said key after each operation automatically to the saine invariable position regardless of which inking field is vbrought into service.

29. In a typewriting machine and in a ri'bbon mechanism', means for one inking field to another, said means coniprising a single downwardly operating ribbon-changing key and means for restoring it to'tlie same normal 'position regardless of which inking field is brought into service'.

30. In a typewriting machine and in a" ribbon mechanism, means forclianging from one inking tield to another, said means coinprising a single field-changing key and means whereby said keyis caused to operate always from the same normal position for each inking field.

31, In a typewriting machine and in a 'Y'ribbon mechanism, means for changing from one inking field to another, said m-eans comprising a single key, automatic restoring means there't'oi, and means whereby said key is aused to have the same operation tor each inking field to be brought into service.

in a typewriting machine, the combination of a ribbon carrier; means for actuating said carrier; and means including a single key t'or varying the actuating means to change the operative field ot' the ribbon, and means whereby said key is depiessible at one operation to render one ribbon field operative and at the next succeeding operation to render another ribbonl field operative.

33. In a typewriting machine, the coinbination ot a ribbon carrier: means y .for actuating said carrier; and means including a single key tor varying the actuating means to change the operative lield of the ribbon, Isaid key being depressible from a single normal position and means whereby said key operates at' alternate depressions to ren? der the same ribbon field operative. and at. depressions intermediate said alternate depressions to render another ribbon field operative. v K

lil. ln a typewriting machine, the com- 'bination ota ribbon vcarrier; means for actuating .said carrier; and means for varying said actuating means to change the operative lield oli the ribbon` saidilast named means including a key and means whereby said key is movable from normal position to render one ribbon tield operative and also is movable to the saine extent trom the saine changing fromv I normal i position in the same direction to l actuating said carrier; and means for varyrender another ribbon field operative. j ing the actuatinfr means to change the op- 35. In a typevvriting machine, the comerative field of tie ribbon, said last named bination of a ribbon carrier; means for i means including a movable member, a key, l aiactua-ting said carrier; and means for vary- I' and devices operated by said key for setting 2 ing the aetuating'meansyto Change the opl said member in one oi' another of a plurality eiativel field of the ribbon, said last named of normal positions,` said key always moving means including'a movable part, a key, and j in a fixed path from a single normal pomeans whereby said key is operative to movesition. v iosaid movable pai-; alternately in opposite l fitness my hand, this 3d day of Septemdirections, said key being movable always in 'l Y EMMIT'G. LATTA. position. .'Witnesses:

the same direction -from a single normal 36i In a typevvriting machine,l the com- 'FRA-NK E'. REID,

ber, 1907.

15. bination of a ribbony carrier; means for GEORGE F. RANsoM. 

